Islantilla weather

Our guide to the weather in Islantilla during September

28

Average high

6

UV Index

20mm

Monthly rainfall

22

Sea temperature

We've looked at the most up-to-date weather data for Islantilla, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Islantilla weather in September.

How warm is it in Islantilla during September?

The temperature reaches around 28℃ during the daytime in September, falling away to 19℃ at night. The UV index will be high at this time of year, so protection against skin and eye damage is needed. Try to limit exposure between 10am and 4pm. Apply broad spectrum SPF 30+ sunscreen every few hours, even if it's cloudy, or more frequently after sweating or swimming, and wear UV-blocking sunglasses too, and bear in mind that bright surfaces, such as sand and water increase UV exposure.

Does it rain in Islantilla during September?

On average, in September you'll see rain on just one day in the month. In other words, you shouldn't see any of the wet stuff. There's a small chance that you'll catch a thunderstorm during your trip.

Is it windy in Islantilla during September?

You're unlikely to experience any strong winds. Expect a light breeze that picks up slightly at times in September. With moderate humidity, any breeze will have a welcome cooling effect.

How warm is the sea in Islantilla during September?

The water temperature around Islantilla reaches a pleasant 22℃ during September. While generally considered warm, some people might find it a little on the cool side on entering the water.

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Weather in Islantilla

Our month-by-month guide to the weather and climate in Islantilla

15.5

Islantilla weather in

January
16.4

Islantilla weather in

February
18.1

Islantilla weather in

March
20.2

Islantilla weather in

April
24.4

Islantilla weather in

May
27.6

Islantilla weather in

June
30.8

Islantilla weather in

July
31.5

Islantilla weather in

August
28.2

Islantilla weather in

September
24.7

Islantilla weather in

October
19.3

Islantilla weather in

November
16.8

Islantilla weather in

December